Every React 19 Feature Explained in 8 Minutes

Ғылым және технология

Grab the React 19 Guide: reactbootcamp.dev
Chapters
0:00 - Intro
0:26 - How to use React 19
0:38 - React compiler
0:58 - No memoization hooks
1:38 - No forwardRef
2:07 - use() hook
2:27 - Fetch data with useEffect/use
3:02 - Use context with useContext/use
3:32 - Directives
3:53 - Actions
4:12 - Client Actions
4:37 - useFormStatus() hook
5:12 - useFormState() hook
6:12 - useOptimistic() hook
7:07 - Conclusion

Пікірлер: 145

  • @wchorski
    @wchorski2 ай бұрын

    Really like the pacing, examples, and humor. Now we just need dark mode 🌙

  • @MASTERRAGE

    @MASTERRAGE

    2 ай бұрын

    I was going to say the same, thank you.

  • @upsxace

    @upsxace

    Ай бұрын

    eww Light mode>>>>>>>

  • @be2wa

    @be2wa

    Ай бұрын

    and a proper typeface...

  • @naishe
    @naishe2 ай бұрын

    Really smooth pacing and topic jumps. Great job!

  • @nihadtima8811
    @nihadtima88112 ай бұрын

    Another fantastic video! Your explanations are exceptional-clear and concise! I'm eagerly awaiting more content from you! Keep up the excellent work!

  • @mod_cyber1015
    @mod_cyber10152 ай бұрын

    Good pace , and clear concept examples. These examples are way better then others . You got one subscriber 👍

  • @russelfernandes8483
    @russelfernandes848318 күн бұрын

    So well explained, thank you for summarizing this (and for all the clear illustrations that took time and effort). I need to watch this a couple more time even after trying to watch as much as I can of React Conf 2024;

  • @nemeziz_prime
    @nemeziz_prime2 ай бұрын

    Amazing explanation 🔥 the visuals and examples really helped me understand the new features of React 19

  • @DericMarchand
    @DericMarchand2 ай бұрын

    This is just a phenomenal video. Concise, simple and great examples.

  • @lamba7044
    @lamba70442 ай бұрын

    really love the way you teach pls make a full in-depth course for React with latest features 🙏

  • @yaroslav_holub
    @yaroslav_holub2 ай бұрын

    This is amazing! Great explanation and great React updates coming.

  • @ouassimzayani8806
    @ouassimzayani88062 ай бұрын

    i like the way you use animations to explain concepts, it makes comprehension so much effective Thanks

  • @JamesQQuick
    @JamesQQuickАй бұрын

    Wow, great overview. Thanks for this!

  • @saravanan-subramanian
    @saravanan-subramanianАй бұрын

    Many thanks for this great summary! 🙏

  • @MaxWilliam
    @MaxWilliam26 күн бұрын

    Awesome explanation! Thanks a lot :) We got a really useful video right here.

  • @TruthOfDeath1
    @TruthOfDeath116 күн бұрын

    Thank you so much for this consice and straight to the point video!

  • @yt-sh
    @yt-sh2 ай бұрын

    the code and order of its working is a good idea. Great video on these React's concepts 👏👏

  • @ayhanarif3906
    @ayhanarif39062 ай бұрын

    Great video! Keep up the good work, mate.

  • @psiko1006
    @psiko10062 ай бұрын

    Please make more of such videos. Fasterr! (Keep up the good work)

  • @soundsofnature4065
    @soundsofnature40652 ай бұрын

    Clear explain, thanks!

  • @mcflanky8340
    @mcflanky83402 ай бұрын

    Good editing and explanation!

  • @binh1298ify
    @binh1298ify9 күн бұрын

    Very helpful. Thanks

  • @MushrathChoudhury
    @MushrathChoudhury2 ай бұрын

    Loving your work. KZread is full of basic react app tutorials, but well explained content like this is much needed

  • @wishmeheaven
    @wishmeheaven2 ай бұрын

    Awesome. (Subscribed!)

  • @naveedalirehmani4135
    @naveedalirehmani41357 күн бұрын

    Great video thanks.

  • @Brunoenribeiro
    @Brunoenribeiro2 ай бұрын

    It's an unusual update from the React team. Until now, React was more like a rendering framework with hooks for adding logic. If you wanted form state for instance, you'd need to add it yourself or use a community lib. Now they are bringing their own solutions to some common use cases. I find it interesting.

  • @bass-tones

    @bass-tones

    2 ай бұрын

    I think they (rightfully) are seeing that React will eventually fall out of relevance if they don’t take some extra steps. The news of the Forget compiler is absolutely massive, and is alone one reason I would have eventually gotten fed up enough with react to switch to something else, if it never appeared.

  • @ajibodeolayinka3903
    @ajibodeolayinka3903Ай бұрын

    whoa this is very nice and easy to understand ... can you kindly make on fetching and sending data to the backend in react ether with fetch() or axios

  • @enriquegrageda
    @enriquegrageda2 ай бұрын

    Your subscribe picture is funny af You got a subscribe from me 😂

  • @HamtaroCappy
    @HamtaroCappy2 ай бұрын

    It makes me feel like a React developer.... which I'm not. Great content !

  • @lllapland
    @lllapland18 күн бұрын

    literally the best one

  • @alexkar66
    @alexkar6627 күн бұрын

    Amazing video! Where do you do such code animations for video?

  • @miervaldis42
    @miervaldis422 ай бұрын

    I just spent 2 hours coding a complex form with Next.js and then, I watched your video, saw `formData` at 4:30, went back to my code and rewrote the from in 20 mins. Lessons of the story : 1) The React updates are really great ! 🚀🚀🚀 2) I should have watched your video earlier 😅😂

  • @zacharyzheng9326

    @zacharyzheng9326

    Ай бұрын

    How about react-hook-form?

  • @nilo_river
    @nilo_river2 ай бұрын

    Full circle to PHP era.

  • @anonimous__ho

    @anonimous__ho

    Ай бұрын

    same impression here since i heard about nextjs… the new stuff is the re-invented old stuff, they cant change it…

  • @simpingsyndrome

    @simpingsyndrome

    4 күн бұрын

    Butt with JavaScript we have constant DX for both backend and frontend while in PHP u still need a JavaScript if u need interactivity​@@anonimous__ho

  • @prashantmishra5691
    @prashantmishra5691Ай бұрын

    that 'subscribe bro plz' at the bottom right got me rolling. subbed haha

  • @jazsouf
    @jazsouf2 ай бұрын

    "use client" doesn't mean you want you component to run on the client and "use server" doesn't mean you want your component to run on the server. "use client" means you want to access browser objects like the window object, so you have to send your component to the client on top of rendering it client side or/and server side. "use server" means create an API endpoint and treat every function defined in the file as POST

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    It's a little more complex than that. "use client" is also required (at least in Next.js) in components that use state, hooks, and event handlers. It's beyond the scope of an 8 minute video, but I'm happy to cover directives in greater detail in a future video (maybe in a Next.js video or when React 19 is stable).

  • @jazsouf

    @jazsouf

    2 ай бұрын

    Yes, “use client” is for when you want your component to run also on the client, but it doesn’t mean that it won’t be server rendered. It has burned me many times when starting with the app router. Great video btw, I think a video about directives coupled with rendering strategies would be great!

  • @o_glethorpe

    @o_glethorpe

    2 ай бұрын

    We are not even use it and it already looks confusing.

  • @rico5146

    @rico5146

    2 ай бұрын

    @@jazsoufYeah, actually many of guys doesn't seem to know that the fact the component marked as 'use client' also rendered on the server. But it only happens on initial page load (Browser's refresh page also does) for faster page load on the browser. After entire html has been made of the page, it gets painted and client components do hydration which attaches hooks or event handler to the component.

  • @soukaynazaidi5099
    @soukaynazaidi50992 ай бұрын

    That was very helpful ❤,thank you very much ,could you please make a tutorial for react redux and redux toolkit ?

  • @compilejs110
    @compilejs1102 ай бұрын

    This is really great explanation 👍 Can you keep video background dark? My eyes hurt in light mode.

  • @0ninetyseven97
    @0ninetyseven97Ай бұрын

    Best explanation

  • @hristiyanhristov9330
    @hristiyanhristov93306 күн бұрын

    After 6 months of programming burnout break looks like Im returning in the right time

  • @devrano48
    @devrano482 ай бұрын

    Thanks god, I was never comfortable working with those optimization elements.

  • @codingintelugu8820
    @codingintelugu88202 ай бұрын

    React compiler is independent of React 19 release. So React Compiler may come with 19 or may not

  • @neosarchizo
    @neosarchizoАй бұрын

    So good videos!!

  • @eugenefedorov3498
    @eugenefedorov3498Ай бұрын

    That was good!

  • @AlfonsusAC
    @AlfonsusAC2 ай бұрын

    "use server" is not to run react component on the server. It is to create instant endpoint and run javascript code in the server.

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    "use server" can be used at the module or function level. You're right that it's primarily used for marking server actions.

  • @seifeldeenessam_
    @seifeldeenessam_2 ай бұрын

    So by introducing both directives and actions, does that mean that React can replace Next.js (or that Next.js isn't necessary anymore)?

  • @jwoods9659

    @jwoods9659

    2 ай бұрын

    It's all a mess i moved over to VUE

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    React doesn't replace Next.js. Next.js is a framework built on top of React. With client-side actions in React 19, you can make a client-rendered React app with actions, so you don't need Next.js to use actions in particular. Directives are useful only if your components can run on the server or client (like in Next.js). Next.js still has a bunch of features you're still not going to get with a plain React project (data fetching tools, routing, image/font loading, etc)

  • @JJ-sz8wf
    @JJ-sz8wf2 ай бұрын

    Hey, thank you for Uploading Videos again: I was currently building my Web App with your Full-Stack Saas App Video with Nextjs and SUpabase. Unfortunately you deleted it, can you reupload it, or has some1 downloaded it?

  • @msahu2595
    @msahu25952 ай бұрын

    Very nice ❤❤

  • @user-bb1cy1yt2q
    @user-bb1cy1yt2q2 ай бұрын

    for beginners should I learn react 19 or older version as most websites use older react version and react 19 has a lot of changes

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    I would learn React 18 first, especially since its still the stable version. React 19 doesn't replace many things. It's useful to understand why these changes were introduced.

  • @zaccanoy
    @zaccanoy2 ай бұрын

    i’m not seeing an ergonomic way of handling error state within the form state or actions here. maybe i’m missing it, or it’s in the docs, but wrapping a component in an error boundary doesn’t feel like a good solution, since that can’t be contained to the component with the form logic (because the error will occur in that component, the error boundary must surround it). there are also aspects of forms that are hard to handle in a performant manner, like arrays of fields. maybe the new compiler handles that part though. but it still sounds like we need libraries like tanstack query to make error handling easy, and libraries like react-hook-form and zod to provide good validation

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    I bet better patterns will emerge once 19 becomes a stable release

  • @snes87aysd8b
    @snes87aysd8bАй бұрын

    Im not a react dev, but I watched the video... I was wondering, does vuejs abstract a lot of things that makes it easier to use than react? It would be interesting an opinion of who know both.

  • @ngochunglongnguyen4523
    @ngochunglongnguyen45232 ай бұрын

    "use server" and "use client" will be a mess! believe me. It's hard to reason about which part of the code is executed on the client or on the server, and confusion will introduce bugs and chaos.

  • @sowmocoding5740

    @sowmocoding5740

    2 ай бұрын

    Been doing this for 2 years in Nextjs lol

  • @snerketryne

    @snerketryne

    2 ай бұрын

    ​@@sowmocoding5740same, and it's a mess lol

  • @kevinreber

    @kevinreber

    2 ай бұрын

    I feel like Remix does a pretty good job at this. If you want your code to only be ran on the server just rename your file with a ".server.ts". If you want your code only ran on the client, then rename your file with a ".client.ts". A lot of these new React concepts and patterns actually look like they're taken from Remix

  • @Athet0s1s

    @Athet0s1s

    2 ай бұрын

    source: believe me. There is so many things that when not used properly can introduce bugs and that doesn't make them less powerful when used properly

  • @elvispalace

    @elvispalace

    2 ай бұрын

    i've been using for a while

  • @SilvestreVivo
    @SilvestreVivo2 ай бұрын

    React is learning from Svelte

  • @firethunder20
    @firethunder202 ай бұрын

    Create one on flutter

  • @MrEnsiferum77
    @MrEnsiferum772 ай бұрын

    Does React 19 will support server components out of the box, or u need some minimal server to support RSC?

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    You need a server. That's why most people use Next.js (with app router) right now.

  • @MrEnsiferum77

    @MrEnsiferum77

    2 ай бұрын

    @@TheCodeBootcampYeah I don't know why I've asked the question, I didn't read the docs properly... Btw, waiting for react 19 and moving towards RSC, it's better if I go greenfield, or I have that time and luxury to refactor client app towards server components, i will go with astro + qwik... I mean get all the performance u can get :)

  • @yashsolanki069

    @yashsolanki069

    2 ай бұрын

    ​@@TheCodeBootcampi didn't get this. When we run the application it's already running on the server right(locally)? So it means another server instance locally to have RSC support? I'm not sure how nextjs does this out of the box?

  • @JazzXP
    @JazzXP2 ай бұрын

    Seems like they're taking a lot of inspiration from Svelte with this update. I'm all for it.

  • @connormc711
    @connormc711Ай бұрын

    Wow react is becoming solid. Ryan was right

  • @user-mc4qu9kp6f
    @user-mc4qu9kp6fАй бұрын

    cool video

  • @vamshikrishna6001
    @vamshikrishna6001Ай бұрын

    Please explain about javascript and mern stack topics

  • @leelacreations
    @leelacreationsАй бұрын

    Could you please create a video on JavaScript Data Structures and Algorithms

  • @tonyvito5062
    @tonyvito50622 ай бұрын

    Happy that React added those features which means no more NextJS. Vercel is almost killing React

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    As a React framework, Next.js offers a bunch of features that React doesn't have out of the box. Routing, image/font optimization, SSR, etc. But features like these definitely make the default React experience nicer. Thanks for watching!

  • @tonyvito5062

    @tonyvito5062

    2 ай бұрын

    @@TheCodeBootcamp Thanks for your HQ content man!

  • @arden6725

    @arden6725

    2 ай бұрын

    all of the server features require next.js until someone writes a different server runtime. the react docs literally refer to next.js when referring to these features

  • @mikefreitag574
    @mikefreitag57417 күн бұрын

    4:13 - is that supposed to be action={myAction} ?

  • @andrasmargittai6663
    @andrasmargittai66632 ай бұрын

    Great

  • @Devendradhare
    @Devendradhare2 ай бұрын

    Experiencing technology change for the first time in my life

  • @zlatanonkovic2424
    @zlatanonkovic2424Ай бұрын

    React is the Apple of Javascript frameworks: "look, everybody, we build a compiler"

  • @Johnssssss
    @Johnssssss2 ай бұрын

    I am new in react can you make a project video which is help to improve react concept 😊😊😊

  • @MaciejPusa
    @MaciejPusa2 ай бұрын

    4:11 myAction!=formAction

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    Typo

  • @haveyouseenitthough
    @haveyouseenitthoughАй бұрын

    Correction on 3:48 - “use server” does not tell react to run the code on the server exclusively. It is only used for creating server actions. “use server” won’t create a server component

  • @TheCodeBootcamp

    @TheCodeBootcamp

    Ай бұрын

    Would have been better to say "To specify code (actions) you want to run on the server"

  • @haveyouseenitthough

    @haveyouseenitthough

    Ай бұрын

    @@TheCodeBootcamp Possibly yeah. I think the real issue is with react choosing those as the way of declaring 2 very different things. “Use client” is more confusing still when you use an SSR framework which is rendering ‘client’ components on the server. It’s fine once you understand it but I think it’s a big problem for beginners

  • @jehnzcode
    @jehnzcodeАй бұрын

    React is slowly becoming Nextjs because of new actions feature

  • @user-zh5kg2op4h
    @user-zh5kg2op4h2 ай бұрын

    'useFormState' is already going to be replaced by useActionState, which returns errorMessage, action, and isPending state.

  • @avciua8082
    @avciua80822 ай бұрын

    Just wow

  • @user-lq7xz1th4x
    @user-lq7xz1th4x2 ай бұрын

    Wow this svelte 5 release looks promising

  • @truestoriesz
    @truestoriesz2 ай бұрын

    Angular please

  • @FrontendNerd-lg3oh
    @FrontendNerd-lg3oh2 ай бұрын

    reed bager is that you ?

  • @playboycity
    @playboycity8 күн бұрын

    The form stuff looks like trying to “use the platform” and the asynchronous stuff looks tanstack query

  • @albiceleste101
    @albiceleste1012 ай бұрын

    They should've done this years ago

  • @privetdriver
    @privetdriverАй бұрын

    react became almost like vue 5 years ago 🎉

  • @Xeras82
    @Xeras822 ай бұрын

    The compiler will not be part auf react 19, maybe as a separatate bable plugin.

  • @emreunlu5592
    @emreunlu5592Ай бұрын

    React 19 = Next 14, that's all there is to it

  • @NetherFilmsTR
    @NetherFilmsTRАй бұрын

    so after 19 versions, react accepts angular's way was the right one.

  • @prashlovessamosa
    @prashlovessamosa2 ай бұрын

    Please make more comprehensive videos with examples.

  • @TheCodeBootcamp

    @TheCodeBootcamp

    2 ай бұрын

    What would you like to see?

  • @prashlovessamosa

    @prashlovessamosa

    2 ай бұрын

    @@TheCodeBootcamp i mean to say please make more comprehensive videos explaning topics thats it.

  • @54peace
    @54peace2 ай бұрын

    9.9/10 ❤🔥 .1 is for not using darkmode 😄

  • @user-hb6yb6bu8n
    @user-hb6yb6bu8nАй бұрын

    Memoization alwayes seemed to me just a headeache when writing react code, In fact, I never even give them I try 😂. Who feels the same?

  • @francisco8196
    @francisco8196Ай бұрын

    Cant get the idea of useOptimistic

  • @mikkun_
    @mikkun_Ай бұрын

    This would destroy our whole app. Omg

  • @SiddharthSharma-ei8os
    @SiddharthSharma-ei8os2 ай бұрын

    am your biggest fans now give me a heart

  • @notaspectator
    @notaspectator2 ай бұрын

    There is a bug in your code on minute 2:42 , your internal function is called fetchPerson, yet in the useeffect you're calling getPerson(). Given that this is a BootCamp, I would assume this is helpful.

  • @notramiras
    @notramiras13 күн бұрын

    This video contains a factually wrong part. "use()" cannot be used to fetch data as described at 2:50. You can't use "use()" with promises created inside the component, because they are not stable references. The whole point of a generic "use()" hook is that unlike other hooks, the identity/persistence of the subscription is already provided by a stable reference. That's the way many state managers, including Recoil, works out dependency definitions inside atoms. You can simply reach out to the dependency through a subscription-based API. But if you put a fetch call in a use(), you'll always have a new promise reference, and it won't work.

  • @jasongates6894
    @jasongates68942 ай бұрын

    The compiler isnt part of React 19.

  • @redeemr

    @redeemr

    2 ай бұрын

    I was so confused about that. I also heard the same thing about the compiler not being included but then I've also seen a lot of people say that it is.

  • @TunifyBasic
    @TunifyBasicАй бұрын

    it's not a compiler it's transpiler.

  • @cheemakhushvirsingh

    @cheemakhushvirsingh

    Ай бұрын

    What's the difference?

  • @imadhamaidi

    @imadhamaidi

    Ай бұрын

    The difference is very subtle, but it is still valid to call it a compiler since it's transforming a high level language which the browser can't understand (JavaScript with jsx etc) into a language that browsers can understand (vanilla JavaScript). Calling it a transpiler would just cause confusion to people that aren't familiar with the term.

  • @danielson9490
    @danielson94902 ай бұрын

    This is gold, very well structured and all the animations helps to get the idea quickly! Thanks for share 🫡

  • @bipinmaharjan4090
    @bipinmaharjan4090Ай бұрын

    Action hook is really messed up.

  • @DarlantenCaten
    @DarlantenCaten2 ай бұрын

    At this point, React is just copying Remix with a worst API.

  • @arayoflight
    @arayoflight2 ай бұрын

    great content

  • @kid1412621
    @kid14126215 күн бұрын

    Remove some useXXX, add some useYYY😂

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